{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x49b480af94f55d57995a487ca0f688cc097e4f98f9c35fad78c173939c7e43ee",
    "signature": "0x1f97f7bce5aa88a88474762c3d6e3470cfc5f08e730afdef825cfd694b1b4eed4dacee8171c8d09f7a6c1a284dcbd5f017a0a6d6df53d6ab7ccd1582ab5377ba1c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}